Internal-combustion pump.



2 SHEETS-SHEET l.

Imm. Feb. I9, 1918 V. GRIFFITH.

INTERNAL COMBUSTION PUMP.

APPLICATION FILED IAN. 22. ISI?.

. lIIIIIk V. GRIFFITH.

INTERNAL COMBUSTION PUMP.

APPLICATION' FILED JAN. 22. 1911.

Patented Feb. 19, 1918.

VICTOR GRIFFITH, F SAN FRANCISCO, CALIFORNIA.

INTERNAL-COMBUSTION PUMP.

Specification of Letters Patent.

Patented Feb. 19, 1918.

Application iled January 22, 1917. Serial N o. 143,552.

To aZZ whom 1t/may concern:

Be it known that I, Vieron GRIFFITH, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Internal-Combustion Pumps, of which the following is a specification.

The present invention relates to improvements in means for the utilization of heat energy as applied, through its expansive force, in motors, air-compressors and hydraulics.

Most attempts to utilize heat energy in devices of the type directing the explosive energy against liquid pistons have proven abortive through lack of provisions for the exhaust of the products of combustion and for the maintenance of a constant volume for both liquid piston and combustible charge in the combined combustion and displacement chamber.

One object of the invention is to provide means, in a device of the type named, for the positive scavenging of the products of combustion and for the maintenance of constant volume for liquid vpistons and cornbustible charges, so that there may be no encroachment of the one upon the allotted space of the other.

A second object of the invention is to provide a device having provisions for the precompression of the combustible charge before its admittance to the combustion chamber, rather than after, thus permitting the utilization of the heavier fuel oils and their combustion at constantl pressures.

In the accompanying` drawings, Figure 1 is a side view, partly in longitudinal vertical section, of my improved internal combustion pump; Fig. 2 is a similar view showing parts in positions different from those in Fig. 1.

Referring to the drawing, a pipe 1 leads from a supply tank 2 and opens into a downward extension 3 of a displacement chamber 4, which communicates at the top with a combustion chamber 5, said communication being controlled by a float valve 6. lVhen combustion of huid fuel takes place is said combustion chamber, by means to be presently described, a water piston in said displacement chamber is driven down and into a conduit 7, opening into the lower end of a cylindrical guide 8, in which is a cylindrical hollow slide valve 9, open at the bottom, and having in its side an opening 10, which, when the valve rises above the top of they cylindrical guide 8, permits Water from the hollow valve 9 to Vflow into a compression chamber 11, from which leads a discharge pipe 12.

he upper end ofV said hollow valve 9 .is connected to the lower end of a valve stem 13, slidable through a bearing in the top of the compression chamber, and connected to the under side of a plunger 14, reciprocable in a cylinder 15. A spring 16 coiled around the stem 13, and compressed between the top of the compression chamber and the top of the hollow valve, assists the pressure in said compression chamber to hold the valve 9 down to its seat at the bottom of the compression chamber. When said plunger 14 rises, it draws air into the cylinder 15 through a pipe 17, a carbureter 18 and a check valve 19, said carbureter being supplied with gasolene by a pipe 20 leading rom a gasolene supply vessel 21. Upon the descent of said plunger the air, now carbureted, is forced through a pipe 22 having therein check valves 23 and 24 into the combastion chamber. As said plunger rises, a finger 25, secured to the valve stem 13, actuates one end of a lever 26 fulcrumed upon a hanger 27 supported by the pipe 22, the other end of the lever being connected to the top of a link 2S, the lower end of which is connected to a valve stem 29 controlled by a spring 30 which actuates a valve 31, which controls the entrance to a waste pipe 32, having therein check valvesV 33 and 34, said pipe leading into the upper end of the cylinder 15, the waste gases being upon the upward stroke of the plunger expelled from said cylinder and into a pipe 35 having therein a check valve 36, said pipe 35 leading to an open chamber 37 surrounding the air inlet pipe 17.

Water flows from the compression chamber 11 to the combustion chamber 5 by a conduit 38 having therein a spring-pressed check valve 39, and it is arranged that ignition of the fuel gas takes place when the pressure in the combustion chamber equals the pressure in the compression chamber. This result is accomplished by providing a contact 40 carried by the stem of the check valve 39, which contact closes -a circuit 41 in which is a spark plug 42. In order to prevent the water entrapped in the hollow valve 9, the guide 8 and the conduit 7 from preventing the plunger 14 from reaching the limit of its downward stroke, there is provided a relief pipe 43 terminating in a nozzle 44E discharging upwardly within the conduit 38.A By means out this conduitthe hot waste gases are sprayed with water and cooled, so that their Volume is very quickly reduced7 and water quickly enters the combustion chamber in readiness for the next explosion.

I claim as my invention:

l. In an apparatus of the character described, the combination of an internal combustion chamber, a liquid chamber communieating therewith through a Valve seat, a ioat valve for closing said seat and a pressure chamber communicating with said liquid and combustion chambers through separate channels.

Q. In an apparatus of the character described, the combination kof an internal combustion chamber, a pressure chamber, a Valve for controlling a conmiunication between said internal combustion chamber and the pressure chamber, and means operated by said Valve for pressing Huid fuel into the internal combustion chamber.

3. In an apparatus of the character de scribed, the combination of an internal combustion chamber, an outlet valve therefrom, a pressure chamber, a valve torroutrolling a communication between said internal combustion chamber and the pressure chamber, and means Operated vby said valve for opening the outlet valve from the internal combustion chamber.

a. In an apparatus of the character described, the combination of an internal combustion chamber, a pressure chamber, a valve for controlling a communication between said internal combustion chamber and the pressure chamber and means operated by said Valve for drawing the waste gases from said internal combustion chamber.

5. In an apparatus of the character described, the combination of an internal combustion chamber, a pressure chamber, a valve for controlling a communication between said internal combustion chamber and the pressure chamber and means operated by said Valve for supplying the Huid fuel to and drawing the Waste gases from, said internal combustion chamber.

6. In an apparatus oli the character described, the combination of an internal combustion chamber, a pressure chamber, a Valve for controlling a communication between said internal combustion chamber and the pressure chamber and means operated by said valve for supplying the fluid fuel to and vdrawing the waste gases from, said internal combustion chamber, said means permit ing the heat of the waste gases to heat the iuid fuel.

7. In an apparatus of the character described, the combination of an internal combustion chamber, an outlet valve therefor, a pressure chamber, a valve for controlling a communication between said internal combastion chamber and the pressure chamber, a spark plug in the internal combustion chamber, an electric'circuit therefor,= a spring for closing said valve, means whereby the closurey of said valve closes said circuit, said valve being arranged to be opened by the eX- cess of pressure over that. in the internal combustion chamber and means operated by said Valve `for controlling said circuit..

VICTOR GRIFFITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D, C. 

